Method and process for improving low-temperature starting performance of start-stop battery

• Main Authors: MAO JIE, XU DONGMING, LOU ZHIQIANG, DONG QINGLIANG
• Format: Patent
• Language: Chinese; English
• Published: 09.02.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to the field of lead-acid storage batteries, in particular to a method and a process for improving the low-temperature starting performance of a start-stop battery. A negative electrode lead paste comprises the following components in percentage by mass: 10.5%-11.5% of deionized water, 4.0%-6.0% of sulfuric acid, 0.05%-0.1% of short fibers, 0.2%-0.4% of lignin, 0.1%-0.4% of carbon black, 0.5%-1.5% of barium sulfate and the balance of lead powder; wherein an electrolyte additive is added into the electrolyte, and an electrolyte additive comprises 10-30g/L of anion exchangeresin and 10-30g/L of cation exchange resin. After the acid content of the negative electrode lead paste is increased and anion-cation exchange resin is added into an electrolyte, the discharge capacity and the static charge acceptance of a battery are not different, the -18 DEG C low-temperature starting performance is obviously improved, and after three times of low-temperature starting circulation, a 10s and 20s disch